【摘要】：研究目的:以三江平原最具代表性的七星河地區(qū)為研究區(qū),基于1990年、2002年和2014年遙感影像數(shù)據(jù),揭示自20世紀(jì)90年代農(nóng)業(yè)結(jié)構(gòu)調(diào)整以來水田分布格局變化規(guī)律。研究方法:GIS空間分析和標(biāo)準(zhǔn)差橢圓分析法。研究結(jié)果:(1)七星河地區(qū)呈現(xiàn)階段性的水田化特點(diǎn)。1990年水田占耕地總面積的12.56%,處于水田化初始階段,2002年和2014年水田面積占比分別是31.85%和37.06%,均處于水田化中期階段。(2)七星河地區(qū)水田基本呈東北—西南的分布態(tài)勢,空間分布階段性極化,整體水田分布逐漸收縮,且呈現(xiàn)北移東擴(kuò)的特征。(3)七星河地區(qū)前期以旱地和未利用地的水田化為主,其中旱地水田化規(guī)律性弱,方向性不明顯,后期則基本為旱地水田化,綜合極化特征突出,未來七星河地區(qū)水田化進(jìn)程將會進(jìn)一步放緩。研究結(jié)論:七星河地區(qū)水田分布格局的演化規(guī)律將對區(qū)域耕地資源合理利用與高效管理提供重要的理論依據(jù)。
[Abstract]:Objective: based on the remote sensing image data of 1990, 2002 and 2014, the study area of Qixing River in Sanjiang Plain was used to reveal the change rule of paddy field distribution pattern since the agricultural structure adjustment in 1990s. Research methods: GIS space analysis and standard deviation elliptic analysis. The results are as follows: (1) in Qishinghe area, the paddy field accounts for 12.56% of the total cultivated land in 1990, and it is in the initial stage of paddy field. The proportion of paddy field area in 2002 and 2014 is 31.85% and 37.06%, respectively. (2) the paddy fields in Qishinghe area are basically distributed from northeast to southwest, the spatial distribution is polarized at different stages, and the whole paddy field distribution gradually shrinks. (3) in the early stage of Qishinghe area, the paddy field of dry land and unused land is the main one, in which the regularity of paddy field in dry land is weak, the directionality is not obvious, and in the latter stage, it is basically paddy field in dry land, and the comprehensive polarization characteristic is prominent. In the future, the process of paddy field in Qixing River area will be further slowed down. Conclusion: the evolution law of paddy field distribution pattern in Qishinghe area will provide important theoretical basis for rational utilization and efficient management of regional cultivated land resources.
【作者單位】： 東北大學(xué)土地管理研究所;
【基金】：國家自然科學(xué)基金項(xiàng)目(41571165) 中央高�；究蒲袠I(yè)務(wù)費(fèi)資助項(xiàng)目(N152410002-8)
【分類號】：S127
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本文編號：2426922